Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Impact driven fastener – e.g. – nail – spike – tack – etc. – Including integral locking means
Patent
1991-09-30
1993-10-12
Friedman, Carl D.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Impact driven fastener, e.g., nail, spike, tack, etc.
Including integral locking means
521694, 52562, 52585, 403292, 405284, E02D 2902, F16B 1506
Patent
active
052520170
ABSTRACT:
A mortarless concrete block retaining wall is formed from special blocks arranged in set-back tiers and interlocked by special offset pins. Each block is trapezoidal in plan view with a pair of vertical holes behind a relatively wide front face. The holes in adjacent tiers are laterally offset. The pins have opposite end sections which are laterally offset from one another and fit respectively in the offset holes to interlock adjacent tiers in set-back relation. The special pins are rotatably adjustable to interlock the tiers in a straight configuration or in varying degrees of convex and concave curved configurations.
REFERENCES:
patent: 798706 (1905-09-01), Rockwell
patent: 3195266 (1965-07-01), Onanian
patent: 3461631 (1969-08-01), Brugnola
patent: 4825619 (1989-05-01), Frosberg
patent: 4920712 (1990-05-01), Dean, Jr.
patent: 5035559 (1991-07-01), Nilsen
patent: 5044834 (1991-09-01), Janopaul, Jr.
Canfield Robert
Friedman Carl D.
Wedgerock Corporation
LandOfFree
Setback retaining wall and concrete block and offset pin therefo does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Setback retaining wall and concrete block and offset pin therefo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Setback retaining wall and concrete block and offset pin therefo will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1900350